Right thanks AJ. So from what you've said it's possible to encode a custom lifebar for anything other than 3.9? Is there any reason why alterations to the lifebar cannot be made in 3.9?
Also does mean that 4.0 won't support a way to alter the lifebar either, although from what I remember of the default build I played the lifebar simply moved from left to right anyway.
Still this doesn't help in making the 4th Mix lifebar...